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Mathematics 10 Online
OpenStudy (anonymous):

How far apart are the foci of an ellipse with a major axis of 26 feet and a minor axis of 24 feet?

OpenStudy (mertsj):

\[c^2=a^2-b^2\]

OpenStudy (mertsj):

If the major axis is 26, then 2a is 26 and a is 13. If the minor axis is 24, then 2b is 24 and b is 12. Use the values of a and b to calculate c

OpenStudy (mertsj):

What did you get?

OpenStudy (anonymous):

5 feet?

OpenStudy (mertsj):

That is the value of c. The distance between the focal points is 2c

OpenStudy (anonymous):

wait im confused so if it's not 5 then is it 8? those the only answers i got

OpenStudy (mertsj):

What is the value of c?

OpenStudy (anonymous):

5?

OpenStudy (mertsj):

What is 2c?

OpenStudy (anonymous):

focal points? right

OpenStudy (mertsj):

Do you know that 2c means two times c?

OpenStudy (anonymous):

okay so then what would be 10?

OpenStudy (mertsj):

yes

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